I voluntarily set all these nothing trying to disable this automatic sleep problem; despite these settings my machine still suspend 20 minutes after a restart.
My machine is a server so i don’t want it to suspend, or hibernate or anything else; it must stay always on.
I also just tried to set:
org.gnome.settings-daemon.plugins.power active false
org.gnome.settings-daemon.plugins.power use-time-for-policy false
but it still suspend.
Under power management GUi i already set both time to never.